Mine's a stock '96. I live at 5,000 ft. and have had it, so far, as high as 8,500 ft. and it's run fine. Next trip I should be going higher and I'll report back how it does. Of course, yours may do different, so I wouldn't hesitate to carry some jets along.
On a side note, where are you hunting?
On a side note, where are you hunting?